Lessons from a challenging system: accurate adsorption free energies at the amino acid/ZnO interface

Michaelis, M, Delle Piane, M, Rothenstein, D, Perry, CC ORCID logoORCID: https://orcid.org/0000-0003-1517-468X and Colombi Ciacchi, L, 2021. Lessons from a challenging system: accurate adsorption free energies at the amino acid/ZnO interface. Journal of Chemical Theory and Computation. ISSN 1549-9618

[thumbnail of 1450008_Perry.pdf]
Preview
Text
1450008_Perry.pdf - Post-print

Download (8MB) | Preview
[thumbnail of 1450008_Perry_Supporting_Information.pdf]
Preview
Text
1450008_Perry_Supporting_Information.pdf - Supplemental Material

Download (9MB) | Preview

Abstract

We undertake steps to overcome four challenges that have hindered the understanding of ZnO/biomolecule interfaces at the atomic scale; parametrization of a classical force field, ZnO surface termination and amino acid protonation state in methanol, and convergence of enhanced- sampling molecular dynamics simulations. We predict adsorption free energies for histidine, serine, cysteine and tryptophan in remarkable agreement with experimental measurements obtained via a novel indicator-displacement assay. Adsorption is driven by direct surface/amino-acid interactions mediated by terminal hydroxyl groups and stabilized by strongly-structured methanol solvation shells.

Item Type: Journal article
Publication Title: Journal of Chemical Theory and Computation
Creators: Michaelis, M., Delle Piane, M., Rothenstein, D., Perry, C.C. and Colombi Ciacchi, L.
Publisher: American Chemical Society (ACS)
Date: 30 June 2021
ISSN: 1549-9618
Identifiers:
Number
Type
10.1021/acs.jctc.1c00165
DOI
1450008
Other
Divisions: Schools > School of Science and Technology
Record created by: Laura Ward
Date Added: 08 Jul 2021 07:59
Last Modified: 30 Jun 2022 03:00
URI: https://irep.ntu.ac.uk/id/eprint/43363

Actions (login required)

Edit View Edit View

Statistics

Views

Views per month over past year

Downloads

Downloads per month over past year